Question

What is the electron configuration of `Ni^(2+)`?

Answer 1

`"1s"^2\ "2s"^2\ "2p"^6\ "3s"^2\ "3p"^6\ "4s"^0\ "3d"^8`

Explanation:

Electronic configuration of Nickel (`""_28"Ni"`) is

`"1s"^2\ "2s"^2\ "2p"^6\ "3s"^2\ "3p"^6\ "4s"^2\ "3d"^8`

After removal of two electrons from outermost shell the electron configuration of `"Ni"^(2+)` is

`"1s"^2\ "2s"^2\ "2p"^6\ "3s"^2\ "3p"^6\ "4s"^0\ "3d"^8`